package com.sky.service.impl;


import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.vo.TurnoverReportVO;
import com.sky.vo.UserReportVO;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


@Service
@Slf4j
public class ReportServiceImpl implements ReportService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private UserMapper userMapper;

    public TurnoverReportVO getTurnoverStatistics(LocalDate begin, LocalDate end) {

        //当前集合用于存放从begin到 end范围内每天的日期
        List<LocalDate> dateList=new ArrayList<>();

        dateList.add(begin);

        while (!begin.equals(end)) {

            begin = begin.plusDays(1);
            dateList.add(begin);

        }
        //存放每天的营业额
        List<Double> turnoverList=new ArrayList<>();
        for (LocalDate date : dateList) {
            //查询date日期对应的营业额 营业额是指 ：状态为已完成的订单金额合计
            LocalDateTime    beginTime=LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime   endTime=LocalDateTime.of(date, LocalTime.MAX);

            //select sum(amount) from orders where order_time > beginTime and order_time < endTime and status = 5
            Map map=new HashMap();
            map.put("begin",beginTime);
            map.put("end",endTime);
            map.put("status", Orders.COMPLETED);
            Double turnover= orderMapper.sumByMap(map);
            turnover=turnover==null?0.0:turnover;
            turnoverList.add(turnover);

        }
//封装返回结果
        return TurnoverReportVO
                .builder()
                .dateList(StringUtils.join(dateList,","))
                .turnoverList(StringUtils.join(turnoverList,','))
                .build();
    }

    /**
     *
     *
     * 用户统计
     * @param begin
     * @param end
     * @return
     */
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        //存放从begin 到end 之间对应的日期
        List<LocalDate> dateList=new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end)) {
            begin = begin.plusDays(1);
            dateList.add(begin);
        }

        //存放每天的新增用户的数量
        List<Integer> newUserList=new ArrayList<>();
        //存放每天的用户总量
        List<Integer> totalUserList=new ArrayList<>();

        for (LocalDate date : dateList) {
            LocalDateTime    beginTime=LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime   endTime=LocalDateTime.of(date, LocalTime.MAX);
            Map map=new HashMap();
            map.put("end",endTime);

            //总用户数量
            Integer totalUser =userMapper.countByMap(map);
            map.put("begin",beginTime);

            //新增用户数量
            Integer newUser=userMapper.countByMap(map);
            totalUserList.add(totalUser);
            newUserList.add(newUser);

        }

        return UserReportVO
        .builder()
       .dateList(StringUtils.join(dateList,","))
       .totalUserList(StringUtils.join(totalUserList,","))
       .newUserList(StringUtils.join(newUserList,","))
       .build();
    }
}
